Porter, Michael E. <br/><br/>
Competitive strategy :  techniques for analyzing industries and competitors 
Michael E. Porter 
 - New York  Free Press  1998 
 - 396 S. 
<br/><br/><label>ISBN: </label>0684841487  49,00 Euro 
<br/><br/><label>Subjects--Index Terms: </label>Strategie